Date: Mon, 17 Feb 2003 19:18:43 GMT From: Paul Halliday <pjghnopsamyonder.co.uk> Subject: Re: My 900 (Behemoth) wants to be a Duck
in article b2rao1$1f12v4$1nopsam34476.news.dfncis.de, davehinznopsamcop.net at davehinznopsamcop.net wrote on 17/02/2003 18:47: > Someone who looks an awful lot like Paul Halliday <pjghnopsamyonder.co.uk> > wrote: > >> Dave's comment would make sense. > > I just wanted to see that again... > >> I used the FSE RRFPR on my old Punto GT and the performance increase, while >> slight, was noticeable. I'll be fitting one of these to Orca. > > I think the biggest reason for fitting one isn't necessarily for immediate > gains, it's to prevent fuel starvation from being the bottleneck in any > upgrades. You can give the engine a ton of extra air, but if you can't > get the fuel in there to burn with it, in the right ratio, fixing the > airflow of the induction/exhaust systems won't help. Kind of like a sport > exhaust - it helps a little on a stock engine, but once you go beyond > stock, it can flow enough to not restrict the output of the higher power > engine. Absolutely. For the while that I had Orca on the road, the sports exhaust probably did nothing until I fitted a free-flow air filter - one of the drop in replacement K&N types, rather than the cone type which I was advised to avoid on the 8V model. A cone type may be more applicable to Carl, who will have the electronically controlled FI system. Given a good air intake and exhaust, my other problem an over-tweaked wastegate leading to dangerous overboosting. With the base boost set correctly, the turbo-mule was tamed. A more smooth overall boost was achieved an the sharp spool-up with occasional overboost was eradicated. I'd like to get back a bit of the more extreme power and I think the RRFPR is a good addition to a car with good intake and exhaust. I'll be coupling this with an improved wastegate and an atmospheric dump valve (for the noise, grin). With the stage set, I'll enjoy that for a while and perhaps when I'm feeling flush, go for a red-box APC - so long as I'm sure the engine gaskets and piping & grommets are all good and perhaps replaced. I'll take any enhancements slow and steady. Mind you, I've not driven Orca properly for a while, but she did run great when I took it over to the garage. The advice to Carl is good - sort of the little niggles, like the vac leak, before turning it into a real Behemoth :) Paul 1985 900i 16V 1989 900 Turbo S http://pjgh.go.dyndns.org/saab/index.html
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